# Chapter 3 : Electromagnetism

111. When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon

112. One Maxwell is equal to

113. Susceptibility is positive for

A.
none of the above

114. Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per metre of length of each conductor will be

115. A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T; the force on the conductor will be
...

116. A 200 turn coil having an axial length of 30 mm and a radius of 10 mm is ivoted in a magnetic field having a flux ensity of 0.8 T. If the coil carries a current of 0.5 A, the torque acting on e coil will be

117. An electromagnet has 50 turns and a rrent of 1 A flows through the coil. the length of the magnet circuit is mm, what is the magnetic field strength?

118. What is the magnitude and the direction of force per 1.1 m length of a pair of conductors of a direct current line carrying 10 amperes and spaced 100 mm

A.

119. Biot-savart's law is a general modification of

120.  The retentivity (a property) of material for the construction of

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